Databricks Databricks-Certified-Machine-Learning-Associate Exam Real Questions

A data scientist is wanting to explore the Spark DataFrame spark_df. The data scientist wants visual histograms displaying the distribution of numeric features to be included in the exploration.

Which of the following lines of code can the data scientist run to accomplish the task?

The implementation of linear regression in Spark ML first attempts to solve the linear regression problem using matrix decomposition, but this method does not scale well to large datasets with a large number of variables.

Which of the following approaches does Spark ML use to distribute the training of a linear regression model for large data?

Which of the following evaluation metrics is not suitable to evaluate runs in AutoML experiments for regression problems?

Which of the following evaluation metrics is not suitable to evaluate runs in AutoML experiments for regression problems?

A machine learning engineer is using the following code block to scale the inference of a single-node model on a Spark DataFrame with one million records:

Assuming the default Spark configuration is in place, which of the following is a benefit of using an Iterator?